When I visited the Thanjavur Royal Palace, I was surprised to find that the Art Gallery had an extraordinary collection of antique bronze statues. Some deities were unique and unheard of, and they ranged from 9th Century to 19th Century. I am posting all the pictures I took, so it may be of some interest to you. Apart from these sculptures, they had a nice collection of Old Coins and also an ancient burial urn called Mudhumakkal Thazhi. You can find all the bronze sculptures from the Thanjavur Art Gallery below:

On the left is Appar; On the right is Brahmadhirayar depicted as a fat person. I could find no historical or mythological reference of him.

Yogasakthi Amman, 12th Century

Nataraja from 12th century A.D. Note how is waist cloth is flying in the air due to his dancing. However, interestingly this statue has no hair, which is often the key element in Nataraja sculptures.

This Nataraja from 11th century, shows the exact opposite. His hair is flying on both sides, while his waist cloth falls straight down.

Dakshinamurthy, shown stamping on Apasmara (the personification of ignorance) - 11th Century

A close up of Apasmara (Ignorance) shown with his lower half pushed into the ground

2 dancing Krishnas on the left and middle; The righmost is Sambandar -12th Century A.D

Bhikshatana (Sanskrit: भिक्षाटन;), a representation of Shiva as a beggar. Notice that has no clothes on and has a snake in his waist. In this form, he is often shown with a pet deer. Bhikshatana is most popular in Tamil Nadu and his icons are almost non existent in North India.

A statue of Raja Raja Chola, made recently

A statue of King Serfoji II is placed in the Durbar hall.

Rishabavaghana and Parvathi

Sambandar, a child poet shown in a dancing pose. 12th century

Left: Unknown; Middle: Sambandar; Right: Appar

Sita, 16th Century

Left: Sivagami; Middle: Sridevi; Right: Kali Amman

Somaskanda (Shiva) is shown with his wife Parvathi and his son Skanda in the middle

Another Somaskanda Statue, please ignore the reflection :)

Vishnu in the middle with Sridevi on the left and Bhudevi on the right

A standing Vishnu with his 2 consorts, Sridevi and Bhudevi

Unknown deities, 11th century bronze sculptures

Vishnu, 12th century. His wheel was used a returnable weapon (like boomerang) and his conch was used to initiate war

Bronze Vishnu, 16th Century

Vishnu Chakra (wheel). This was a weapon that would spin, strike and return back to the user.

Description of some sculptures are wrong, e.g. Somaskanda literally means Sa-Uma-Skanda (Siva who appearing with his consort Uma and Son Skanda). If Siva appearing alone with the same attributes of Somaskanda (I.e. parasu, mriga,abhaya and varada) which can be consider as Chandrasekhara